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4 System Design
G5-series AC Servomotors and Servo Drives User’s Manual (with Built-in EtherCAT Communications)
4-2 Wiring
4
4-2-3 Main Circuit and Motor Connections
*1 The first value is for single-phase input power and the second value is for 3-phase input power.
*2 Connect an OMRON power cable to the motor connection terminals.
*3 Use the same wire size for B1 and B2.
Model (R88D-)
KN15H-
ECT
KN20H-
ECT
KN30H-
ECT
KN50H-
ECT
KN75H-
ECT
KN150H-
ECT
Item Unit
Power supply capacity kVA 2.3 3.3 4.5 7.5 11.0 22.0
Main circuit
power supply
input (L1 and
L3, or L1, L2
and L3)
Rated current A
14.2/8.1
*1
11.8 15.1 21.6 32.0 58.0
Wire size − AWG14 AWG12 AWG10 AWG6
Screw size −− − M5 M6
Tightening
torque
N·m −− 2.0 2.0 to 2.4 2.2 to 2.5
Control circuit
power supply
input (L1C and
L2C)
Wire size − AWG18
Screw size −− − M5 M4
Tightening
torque
N·m −− 2.0 1.3 to 1.5 0.7 to 0.8
Motor
connection
terminals (U,
V, W, and FG)
*2 *3
Rated current A 9.4 13.4 18.7 33.0 44.0 66.1
Wire size − AWG14 AWG12 AWG6 AWG4
Screw size −− − M5 M6
Tightening
torque
N·m −− 2.0 2.0 to 2.4 2.2 to 2.5
Frame ground
(FG)
Wire size − AWG14 AWG12 AWG6 AWG4
Screw size − M4 M5 M6
Tightening
torque
N·m 1.2 2.0 1.4 to 1.6 2.4 to 2.8
Dynamic brake
resister control
terminals
Wire size −− AWG18
Screw size − M5 M6
Tightening
torque
N·m 1.3 to 1.5 0.7 to 0.8